Protests in Thailand's national election – An injured government supporter is carried to a hospital during clashes with anti-government protesters in Bangkok on Saturday, February 1. Gunshots were fired during a confrontation, injuring at least six people.

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Photos: Protests in Thailand's national election15 photos

Protests in Thailand's national election – A soldier takes cover as violence escalates before the elections on February 1.

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Photos: Protests in Thailand's national election15 photos

Protests in Thailand's national election – An anti-government protester inspects bullet holes in a window of his comrade's truck.

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Protests in Thailand's national election – An injured man gestures after fleeing from the gun shots.

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Photos: Protests in Thailand's national election15 photos

Protests in Thailand's national election – Protesters take cover as gun shots are fired.

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Protests in Thailand's national election – Anti-government protesters wave national flags during a parade in Bangkok.

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Protests in Thailand's national election – Anti-government protest leader Suthep Thaugsuban cheers during a march through Bangkok's Chinatown.

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Protests in Thailand's national election – Thai electoral officials prepare material for the general elections at a district office in Bangkok on February 1.

The Bangkok district of Laksi postponed its election for about 87,000 voters Sunday because protesters were blocking the administrative office where the ballot boxes are kept, national security chief Paradorn Pattanathabutr said. The new voting date has not been set.

Laksi, a district of mixed pro- and anti-government sentiment, saw violent protests Saturday when gunfire erupted during anti-government protests, witnesses said. At least eight people have been wounded since Saturday, the Erawan Medical Centre said.

And in the Bangkok district of Din Daeng, voting was called off because government protesters blocked officials from distributing ballot boxes.

A group of government supporters responded by gathering at the Din Daeng district office chanting, "Election, election" and "We want to vote today." They raised their fists and held up their voter registration cards -- but to no avail.

At a rally Sunday, an opposition leader urged protesters to remain peaceful and to continue boycott efforts by shutting down government offices Monday.

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"We need to keep our principles. We fight in peace, with no weapons and violence. We only fight with our feet and whistles," People's Democratic Reform Committee leader Suthep Thaugsuban said. "We have the right to a peaceful protest."

Even before voters started casting their ballots, the opposition Democrat Party appeared to be bracing for a battle. On Friday, an attorney for the party filed a petition asking the nation's constitutional court to declare Sunday's election invalid, arguing that some areas could not hold elections and some polling stations would not be able to count votes.

The turmoil stems from a monthslong campaign against Prime Minister Yingluck Shinawatra. Since November, at least 10 people have died and nearly 600 have been wounded in violence.

Despite the continued chaos, some voters in Bangkok insisted on casting their ballots.

"I'm very excited to exercise my right to vote today," Nopphorn Tabupha said from Bangkok's Bueng Kum district. "I didn't think I would be able to come out. I thought I was going to be blocked by the protesters."

Meanwhile, many opposition activists, including Suriya Phodhikul, have already rejected the vote.

"No, I didn't (vote) -- I want reform before elections. Because if I did, we will only get bad people, corrupt politicians," Phodhikul said.

Shinawatra called this week's elections in December in a bid to ease mounting tensions on the streets of Bangkok. But the demonstrators and the main opposition party with which they're affiliated have already rejected the vote. The Prime Minister's party is expected to win comfortably.

Her brother, Thaksin Shinawatra, is a business tycoon who became prime minister before being overthrown in a military coup. He has since lived in exile, but his opponents accuse him of dominating politics from afar, including through his sister.